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Cold Dust and its Heating Sources in M 33

Published online by Cambridge University Press:  05 December 2011

Shinya Komugi
Affiliation:
Joint ALMA Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile, email: skomugi@alma.cl National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan
Tomoka Tosaki
Affiliation:
Joetsu Univ. of Education, Yamayashiki-machi, Joetsu, Niigata, 943-8512, Japan
Kotaro Kohno
Affiliation:
Institute of Astronomy, School of Science, The University of Tokyo, Osawa, Mitaka, Tokyo, 181-0015, Japan Research Center for Early Universe, School of Science, The University of Tokyo, Hongo, Bunkyo, Tokyo, 113-033, Japan
Takashi Tsukagoshi
Affiliation:
Institute of Astronomy, School of Science, The University of Tokyo, Osawa, Mitaka, Tokyo, 181-0015, Japan
Yoichi Tamura
Affiliation:
Institute of Astronomy, School of Science, The University of Tokyo, Osawa, Mitaka, Tokyo, 181-0015, Japan
Rie Miura
Affiliation:
University of Tokyo, Department of Astronomy, School of Science, Hongo, Bunkyo, Tokyo, 113-0033, Japan
Sachiko Onodera
Affiliation:
Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano, 384-1305, Japan
Nario Kuno
Affiliation:
Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano, 384-1305, Japan
Ryohei Kawabe
Affiliation:
Nobeyama Radio Observatory, National Astronomical Observatory of Japan, Minamimaki, Minamisaku, Nagano, 384-1305, Japan
Koichiro Nakanishi
Affiliation:
National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan
Tsuyoshi Sawada
Affiliation:
Joint ALMA Observatory, Alonso de Cordova 3107, Vitacura, Santiago, Chile, email: skomugi@alma.cl National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan
Hajime Ezawa
Affiliation:
National Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo, Japan
Grant W. Wilson
Affiliation:
Department of Astronomy, University of Massachusetts, Amherst, Massachusetts 01003, USA
Min S. Yun
Affiliation:
Department of Astronomy, University of Massachusetts, Amherst, Massachusetts 01003, USA
Kimberly S. Scott
Affiliation:
Department of Physics and Astronomy, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
David H. Hughes
Affiliation:
Instituto Nacional de Astrofisica, Optica y Electronica (INAOE), Aptdo. Postal 51 7216, 72000 Puebla, Mexico
Itziar Aretxaga
Affiliation:
Instituto Nacional de Astrofisica, Optica y Electronica (INAOE), Aptdo. Postal 51 7216, 72000 Puebla, Mexico
Thushara A. Perera
Affiliation:
Department of Physics, Illinois Wesleyan University, Bloomington, Illinois 6172-2900, USA
Jason E. Austermann
Affiliation:
Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, Colorado 80309, USA
Kunihiko Tanaka
Affiliation:
Department of Physics, Keio University, 3-14-1 Yokohama, Kanagawa, Japan
Kazuyuki Muraoka
Affiliation:
Department of Physical Science, Osaka Prefecture University, 1-1 Sakai, Osaka, Japan
Fumi Egusa
Affiliation:
Institute of Space and Astronautical Science, Japan Space Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa, Japan
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Abstract

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We have mapped the nearby face-on spiral galaxy M 33 in the 1.1 mm dust continuum using AzTEC on Atacama Submillimeter Telescope Experiment (ASTE). The preliminary results are presented here. The observed dust has a characteristic temperature of ~ 21 K in the central kpc, radially declining down to ~ 13 K at the edge of the star forming disk. We compare the dust temperatures with KS band flux and star formation tracers. Our results imply that cold dust heating may be driven by long-lived stars even nearby star forming regions.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2011

References

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